Yep, you will have unlimited access to the "Tropical Reef" (an approx. 16' deep saltwater tank where all the fish are) and the Ray Pool (a waist-deep wading pool where there are many "de-barbed" cownose rays and southern stingrays), along with the freeflight aviary as well.
All of these are open until 5:30PM and you can go back as often as you like, whenever you like. They also have animal feeding times in the aviary and ray pool where you are (at no additional cost) provided with food to feed the animals.
Just walk right over and hop in! Those areas are not structured like the dolphin swims are.
It's awesome, have fun! =)